Shaper guard



Nov. 2 1926. 1,605,719

M` A. GRIMORD ET AL l I SHAPER GUARD Filed May 27, 1926 5`Sheets-Sheet 1 p. l W01. s;

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Nov. 2,1926. r 1,605,719

M. A. GRIMORD ET AL SHAPER GUARD Fileci May 27, 1926l 5 Sheets-Sheetl 2 l 1| Fi .2.

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Nav. z 192s. 41,605,719 M. A. GRIMORD ET AL SHAP ER GUARD Filed May 27, 1926 3 Sheets-Sheet. 3

I N V EN TORS M lz'urqlnwrd AZQILB Gra/1101129,

M ATTORNEY.

Patented Nov. 2, 1926a hitters `tlNITE` STATES Ffi'iENT QFFICE..

transen a. eariaoan os aurNNnsac, AND Anemia; ze. caminan, or raoN ivicUNfrarN, MICHIGAN.

SHAEER GUARD.

Application filed May 27, 1926.

lhis invention relates to a guard device designed primarily for use in connection with the shaping element, of a shaping machine, but it is to he understood that a guard device, in accordance with this .invention can be employed for any purposes for which it is found applicable, and the invention has for its object to provide, in a manner as hereinafter set forth, a guard device including aV guard element and means controlled by a jig or the work on its travel to and from the shaper element to provide for the elevating and lowering of the guard element to and from guarding position with respect to the shaper element under suoli conditions protecting the operator and reducing accidents to a minimum.

Further objects of the invention are to provide, in a manner as hereinafter set forth, a guard device for the purpose referred to, which` is simple in construction and arrangement, strong, durable, thoroughly efficient in its use, automatic in .its operation, readily installed with respect to a shaping machine, and compa 1atively inexpensive to set up.

l.Vith the foregoing and other objects in view, the invention consists of the novel construction, combination and arrangement of parts as hereinafter more specifically described and illustrated in the'accompanying drawings, wherein is shown an embodiment of the invention, but it is to be understood that changes, variations and modifications can be resorted to which fall within the scope of thev claims hereunto appended.

in the drawings wherein likeV reference il'iaracters denote corresponding parts throughout the several views:

Figure l is a side elevation of a guard device in accordance with this invention.

Figure 2 is a front elevation thereof.

Figure 3 is a top plan view thereof.

Figure 4t is an elevation of the circuit opening and closing mechanism controlled by the or the worlr on its passage to and from the Shaperv element.

Referring to the drawings detail, a guard. device, in accordance with this. invention comprises. a hood: l ofsubstantial height and which is .in the forni of a hollow cylinder open at its rear from top to bottom.l The hood is constructed from a plate. of sheet metal.. of. the desired gage and bentin cylindricall form and; with the opposed. edges of the plate" spaced fronileaclt'ptlier. se

Serial No. 112,182.

the hood will be open at the rear thereof. The hood l` is termed a guard element, and is connected with a suitable means, to be presently referred to.; for the purpose of elevating and lowering the guard element from and to protecting position or guarding position with respect to the shaper element of a shapingl machine. llVhen the guard element l is in lowered position it acts as a hood to surround the shaperelement. i

The table or platform of the shaping in achine is indicated at 2 and the guard element l is suspended a substantial distance thereabove and at a point to surround the sliaper element, not shown, whenthe guard element is in its lowered position. The table or platform 2 of the machine at a point forwardly with respect to the guard element l is' provided with a vertically extending spring-controlled shifting element 3 for the actuating lever of a circuit opening and Closing mechanism, to be presently referred to, and which is arranged below the table or platform 2. rlhe shifting element or device 3 projects a substantial distance above the upper face of the table or platform 2 and is in the path of a which moves towards and from the Shaper element of the machine. is the moves forwardly or rather towards the shaping element of the machine the shift- 1"' ing device or element 3 is depressed and is held in such position as long` as the jig 1s engaged with the top ofthe device 3. When ythe is moved clear of the upper end of the shifting device or element 3, the latter resumes its normal position, which is slightly projected above the upper face of the table or platform 2. The shifting device or element 3 can be of any suitable form. lf the work isshifted towards the shaping element, without the employment of the j ig, then the worlr acts as a means to depress the shifting element or device 3 and maintains it in lowered or shifting position until the work is moved off therefrom. When the shifting device or element 3 is depressed, it provides means for actuating the shifting lever of the circuit opening and closing mechanism for the purpose of closinga magnet or solenoid circuit toenergize the. saine: to cause the shiftingofthe means for elevating the guard ele.- iuent i. `Whenpressure is removed from the shifting device or element 3, thecircuit opening'and closing.,inecl'ianisrrr isrestored vto normal-.position which. provides for the-open Cil Qi neosffle ing of the magnet or solenoid circuit and permits o1c the guard element 1 shifting downwardly to guarding or protecting position with respect to the shaper element ot' the machine.

lfixedly secured to the guard element 1 at a point in proximity to its upper end is a carrier et which extends around the outer 'face olf the guard element l as well as being secured therewith, and projects rearwardly therefrom. The carrier i is in the form ot a yoke, disposed horizontally. and has its arms project rearwardly from the guard element 1. Each. ot the arms ot the carrier 4i has its rear tree end in the 'form oit a loop 7. The loops 7 are slidably mounted on a pair ot spaced vertically disposed guide posts 8 arranged rearwardly oit, spaced from and ot' greater height than the height oi the guard element 1.

Secured to the guard element 1, in proximity to its lower end. is a combined guide and retaining member 9 ot the same contour as the contour of the carrier Li and said member 9 is slidably mounted7 as at 10, on the posts 8.

Secured to the table or platform 2, by the hold fast devices 11 is a plate 12 having a concave forward edge 13 to provide aclearance for the collar lying under the slr-iper block. rlhe guide posts 8 are secured into the plate 12. J amb nuts 14: engage with the posts 8 and abut the plate 12. Mounted upon each ot the nuts 14 and surrounding a post 8 is a vertically disposed sleeve 15, et appropriate height` and the said sleeves 15 provide stops for arresting` the lowering movement oli' the guard element 1. The sleeves 15 are engaged by the rear ends ot the member 9 tor the purpose of arresting the lowering movement of the guard element 1. Figure 1. Y

.ilirranged rearwardly of the posts 8, is an -shaped standard 16 ot less height than the height ot said posts. The standard 16 is positioned ceiitrally with respect to the space termed between the pair ot posts 8, arranged rearwardlyT ot thev plate 12 and secured to the table 2 by the hold tast devices 17. rlhe standard 1G is ot greater height than the height oi the guard element 1.

The upper ends of the posts 8 are connected together by a cross head or tie har 18 and each end thereof is secured to the upper end ot a post 8 by a pair of superposed nuts l Each end ot the cross head or tie har is interposed between a pair ot nuts 19. Secured to the top et the standard 16 is a pivot element formed ot a pair ot oppositely disposed bars 20, 21 and which projectabove the upper ends of the posts 8. Each of said bars has its lower end formed with a rightangularly disposed flange 22 and its upper terminal portion offset as at that part of the bars 20. 2l between the upper terminal portions 23 and tia-.nee 22 thereof, are arranged in abutting relat Extending rearwardly trom the cross he :i or tie bar 18 is a pair ot' brace members which are disposed at a downward inclination and extend from the tie bar or cro head 18 to the flanges 22. rllhe forward ends of he brace members 2a are secured to the cross head or tie bar 18 by the hold tast devices 25. members 2li are seated on the flanges 22, and common to the lower ends oilI said brace members and flanges 22 are hold tast devices 2G for fixedly securing the lower ends oit' the brace members and the langes 22 to .i

the lower ends o't the members 2li are angularly disposed I'ith respect to the intermediate portion ot' said members and in this connection Figure 1. The ottectting ot the upper terminal portions oit the bars 20 21 provide a harp, referred to generallyY bythe reference character 27' for a purpose to he hereinafter set forth.

Supported by the pivot element which is formed by the oppositely disposed bars 20, 2l is an electrically controlled elevating and lowering mechanism Ytor the guard element 1. The said mechanism includes a counter balanced lever arm 28 which is pivotally mounted in the harp 27 by the pivot bolt 29. The pivot bolt 29 is positioned slightly torward with respect to the transverse median of the lever arm 28 whereby the latter is eccentrically mounted on its pivot. rl`he rear end ot' the lever 28 has adjustably mounted thereon a counter weight 30. The 'forward end ot the lever arm 28 is pivotally connected, as at 31 between the upper ends et a pair ot vertically disposed links rihe lower ends ot the links 32 are pivotally connected, as at 33, between a pair of oppositely disposed angle irons 311 which are Xedly secured as at 35 to the top ot an inverted yoke 36. The arms of the yoke 36 are pivotally connected at diametrically opposite points to the carrier Ll. Oppositely ei;- tending lugs 37 are provided on the carrier i which extend through the lower ends et the arms 38 of the yoke 36.

Adjustable on the standard 38 is a solenoid magnet 39 having its core indicated at f1() and which has its upper portion reduced. Pivotally connected as at Ll1 to the reduced upper end of the core Ll0 is a pair of opposed links 42. The lower ends of the links l2 are pivotally connected to the upper end of the core as at 41. The upper ends of the links 42 are pivotally connerted as at 43 to the lever arm 28 rearwardly with respect to the pivot bolt 29. The links e2 are of non-conducting material.

The lower ends ot the brace lll) neosffle From the construction aforesaid, when the solenoid 39 is energized, the core 40 thereof will move downwardly whereby the lever arm 28 will be shifted on its pivot and in a direction to elevate the guard element l. vvl/Then the solenoid 39 is cle-energized, the guard element l will move downwardly by gravity, but its movement will be somewhat retarded by the weight 30'. The position ot the parts, when the magnet 39 isde-energiaed, is as illustrated in Figure l.

The solenoid 39 has leading therefrom the circuit connections 44, and which extend to a circuit opening and closing mechanism referred to generally by the reference character 46, Figure 4. Any suitable orm of circuit opening and closing mechanism can be employed for opening and closing the solenoid circuit, and one form oi' circuit opening and closing mechanism is indicated at 46 and includes a contact member 47 to which the lead 44 is attached and a contact member 48 to which the lead 45 is attached. The contact member 47 is pivoted as at 49 and spring controlled through the medium ot the spring 50. The contact member 48 K is carried by a spring controlled pivoted lever 5l. The circuit connection 45 is attached to the contact member 48. The controlling spring :tor the lever 5l is indicated at 52. The lever 5l is pivotally connected as at 53 toa pair of supports 54, carried by the easing 55 of the circuit opening and closing mechanism 46. The circuit closing and opening mechanism is electrically con nected with a suitable source oit' energy. The lever 5l projects into the casing 55. The Contact members 47, 48 are normally spaced i'rom each other, but when the lever 5l is shifted on its pivot against the act-ion ot the controlling spring 52, the Contact memher 4S is brought into engagement with the contact member 47 thereby closing the solenoid circuit. The outer end oit the lever 51 is toi-med with a flat extension 56, which is arranged in the path of the lower end of Vthe spring controlled shifting device or element 3, see Figure l. By this arrangement when the shifting device or element 3 is moved downwardly, the lower end ot said device will engage the outer end of the lever 51to shitt the latter and provide for the closing oi-z' the circuit, and the circuit will remain closed as long as the shifting element or device is depressed or held in depressed position by the ig ot' the work.

The weight 30 acts as a counter balance and assists the electro-magnet or solenoid in the raising of the guard element and tur` ther checks the guard element from dropping too fast. The solenoid 39 is adjustably connected to the standard 38 as at 39. lflie position ot the solenoid 39 will control the distance in which the shield l is shifted that is to say the lower the solenoid 39 the higher the shield 1 will be lifted.

As the elements ot the guard device with the exception oic the spring controlled lever 51, are free o1 controlling springs or do not have associated therewith controlling springs, their operation is not ar'lected in any manner by shavings or sawdust and tun. ther the device is so set up that the guard element or shield is not shifted from protecting position unless the ig or worlr depresses or bears on the shitting der/ice or element 8. Furthermore unless the solenoid circuit is closed. the guard element l is never elevated from protecting position with respect to t ie shaver element.

lt is thought the many advantages of a guard device, in accordance with this invention tor the purpose referred to, can be cadily understood, and although the pre- -red embodiment of the invention is as astrated and described, yet it is to be un dei-stood that changes in the details of construction ean be had which will i'all within the scope oi" the invention as claimed.

lVhat we claim is:

l. A guard device for the purpose set forth comprising a guard element vertically movable to and from guarding position with respect to a shaper element, and an electrically operated counter-balanced lever mechanism tor shitting said guard element from and to guarding position with respect to the shaper element, said mechanism controlled by the passage oi the worl; to and from the shaper element.

2. A guard device 'for a sha 3er element comprising a guard element in the 'form of a -hood and vertically movable 'from and to guarding position with respect to the shaper element, a counter-balanced lever mechanism connected to said guard element, and electrical means controlled by the passage oi the worl to and i'roin the shaper element for operating said lever mechanismto shiiit the guard element from guarding position with respect to the shaper element and vtor maintaining t-he guard element in non-guarding position when the Shaper element is active on the work, said guarn clement shitting by gravity to guarding position by the opening oi the circuit for said electrical means.

3. A guard device for a shaper element comprising a guard element normally surrounding, when in guarding position, the shaper element, said guard element vertically movable from and to guarding position, a counter-balanced lever mechanism adapted when operated in one direction to shift said guard element 'from guarding position with respect to the Shaper elemei'it, electrical means normally in an open circuit and connected with said mechanism and further adapted 'to operate the latter when the cir- .gli neoaaie cuit for said. means is. closed to shift the guard element from guarding position. With respect to the shaper element, and means operated by the passage of the Worlr toward the Shaper element for closing the circuit tor said electrical means to shi'lit the guard element from guarding position and for maintaining it in non-guarding position during the activity ot the shaper element on the Work.

4e. A guard device for a shaper element comprising a guard element in the form or' a hood and vertically movable from and to guarding position with respect to the shaper element, a counter-halanced lever mechanism connected to said guard element, electrical means controlled hy the passage ot the ivorl; to and from the sha-per element tor operating said lever mechanism to shi-itthe guard element from guarding position with respect to the shaper element and for malin taining the guard element in non-guarding position when the Shaper element :is active on the work, said guard element shifting hy gravity to guardingl position hy the open ing of the circuit for said electrical means, and guiding means for said guarding element.

5. A guard device for a shaper element comprising a guard element normally surrounding, When in guarding position. the shaper clement, said guard element vertically movable trom and to guarding position, a counter-balanced lever mechanism adapted when operated in one direction to shift said guard element from guarding position With respect to the shaper element, electrical means normally in an open circuit and connected With said mechanism and adapted when its circuit is closed to operate said lever mechanism to shift the guard element :from guarding position with respect to the shaper element, means operated loy the paso the Work toward the shaper element for closing the circuit `for said electrical means to shift the guard element from guarding position and for maintaining it in nonguarding position during the activity of the shaper element on the Work, and guiding means for said guard element.

G, guard device 'for a shaper element comprising a guard element in the 'form of a hood and ertii'ially movable trom and to guarding position with respect to the shaper element, a countenhalanced lever mechanism connected to said guard element, electrical means controlled by the passage ot the Work to and from the shaper element :tor operatd lever mechanism to shitt the guard e t from guarding position with respect to the shaper element and for maintaining the' guard element .in nonguarding position when the Shaper elementisxactive on the Work, said guard clement-shifting, hy gravity to guarding position by the opening of the circuit for electrical means, (l e l means for said guarding element, and meerfor limi ng the movement of the guarding element when shitting to guarding position,

,7. it. guard device 'for a shaper element passage ot' the Work toward the shaper elel1 ment Yfor closing the circuit :lfor said electrical. means to shitt the guarding element from guarding position and for maintaining it in non-guarding position during the activitv oic means tor said guard element, and means tor arresting the movement of the guarding element when shitting to guarding position.

los ,fr guard device tor a shaper element hood l'or surrounding the shaper elen'ient guard element is in guarding polever mechanism i'or shitting said guard element from guarding position with respect to said shaper element, said guarding element n'iovable to guarding position hy gravity, and electrical means controlled hy the passage of the Work to the shaper element 'for operating' said lever mechanism to shift the guard element from guarding position and further to maintain said guard ele- '.ient in non-guarding position during` the activity of the shaper clement on the vfoi'l.

S). le guard device for a Shaper clement comprising a guard element in the form ot a hood. for surrounding` the Shaper clement when said guard element is in guarding position, a lever mechanism for shitting said guard element trom `guarding position with respect to said shaper element, said guarding element movable to guarding position hy gravity, electrical means controlled hy the passage oi the work to the Shaper clement for operating said lever mechanism to shii't the guard clement 'from guarding position and further to maintain said guard element in non-guarding position during the activity of the shaper clement on the Work. and guiding means for said miard element.

l0. A guarding derice tor a element' comprising a guard element for surrounding t-he Shaper element when in inactive position, said guard element vertically movable from and to guarding position, said guard element movable to guarding' position counter-balanced lever mechanism the sliaper 'element on the ivorlc, guida guard element in the form of a '127"- fino lll)

by gravity, elevating means for said guard element to shift the latter from guarding position, electrical means for operating said elevating means, said eleetrical means normally in an open circuit, and means acted upon by the Work by its passage towards the shapcr element for closing' the circuit of said electrical means to provide for the operation for said elevating means to shift the guard elementrom guarding position and to maintain the latter in non-guarding position during, the activity of the shaper element on the Work.

11. A guarding device -for a Shaper element comprising a guard element 'for sur-- rounding the shaper element when in inac* tive position, said guard element verticaliy movable from and to guarding position, said guard element movable to guarding position by gravity, elevating means for said guard element to shift the latter from guarding position, electrical means for operating said elevating means, said electrical means normally in an open circuit, means acted upon by the Work by its passage towards the Shaper element for closing the circuit of said electrical means to provide for the operation of said elevating means to shift the guard elementfrom guarding position and to maintain the latter in non-guarding position during` the activity of the shaper element upon the Work, and guiding means for said guard element.

In testimony whereof, We afix our signatures hereto.

MARTIN A. GRIMORD. ADOLPH P. GRIMORD. 

